82		Elite: Dangerous (Windows, 2015)
63		X-COM: Interceptor (Windows, 1998)
60		Star Rangers (DOS, 1995)
54		Star Trek: Bridge Commander (Windows, 2002)
50		Star Raiders (Windows, 2010)
50		Space Trader (Windows, 2007)

Notes: Games similar to Allegiance, Games like Allegiance, Microsoft Research Games, Microsoft Corporation, Windows, Action, Simulation, Strategy, Tactics, Sci-Fi, Futuristic, Managerial, Business Simulation, 1st-person, Behind view, Top-down, Space Flight, Simulation - Space combat, PC, Game Similarities.